ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,558, issued on May 27, was assigned to GE AVIATION SYSTEMS LLC (Grand Rapids, Mich.).

"Semiconductor switching device" was invented by Collin William Hitchcock (Clifton Park, N.Y.), Stacey J. Kennerly (Niskayuna, N.Y.) and Ljubisa D. Stevanovic (Clifton Park, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor device cell includes a drift region having a first conductivity type, a well region having a second conductivity type disposed adjacent to the drift region, the well region defining a set of well region segments. A source region having the first conductivity type is disposed adjacent to the well region and surrounded by the wel...